Gas Kinetic Scheme for Continuum and Near-Continuum Hypersonic Flows
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چکیده
We present a unified approach for both continuum and near-continuum flows based on the Boltzmann equation and kinetic theory. We use the gas-kinetic scheme (GKS) developed from the linearized Boltzmann equation for the continuum flows and a modified GKS with a variable relaxation time for the near-continuum flows. The gas-kinetic schemes are validated with simulations of the hypersonic flow past a hollow flare at Mach number 9.91 and the shock structures of Argon gas at Mach 8.0 and 9.0. Our results show that the gas-kinetic schemes can indeed simulate both the continuum and near-continuum flows.
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تاریخ انتشار 2007